Discharging device for conveyers



Oct. 22,1929. s. oLsoN DISGHARGING DEVICE FOR COWEYERS Filed JunefSO. 1927 3 Sheets-Sheet 2 i Patented Oct. 1929 e Unirse' s*rares` Param OFFICE I SAMUEL OLSON, 0F CHICAGO, ILLINOIS, ASSIGiNOR T0 SAMUEL OLSON da COMPANY, *DI*l CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS DISCIHARGING DEVICE FOR CUNVEYERS Application filed June 30,

rlhe invention relates to discharging devices for conveyers.

ln the type of device exemplified in Patent lilo.. l,50l,705 dated Aug. l2, 1924 for svvitchg ing or discharging load-carriers, such as bores, trom endless conveyors, it frequently occurs that the box-bottoms become torn or acquire sharp points Which will tear or Wear the belt, particularly during relative lateral y@ movement between the boxes and the belt which occurs in the discharging operation oil the boxes. When the belts are of considerable length, the cost ol 4replacing them is greatal 'lhe primary object oi .the present invention is to provide an automatic discharging device lor the load carriers which will overcome this cutting, tearing, or Wearing ot the conveyer-belt and to enect a considerable saving in the cost ot maintenance which heretoiore resulted from the necessity or replacing the belt when itl became torn or vvorn. Vlfhis object is attained by providing means to automatically litt the carriers od the belt f during their' lateral discharge.

@ther objects of the invention will appear trom the description ot the devices enempli tying the inventionu 'lhe invention consists in the 4several novel ileatures hereina'lter set forth and more parw ticularly deiined by claims at the conclusion liereoi.

ln the dravvings: lFig. l is a plan ola conveyer system embodying the preierred il'orrn ot the invention. lllig0 2 is a plan ot a portion ot the system von a smaller scale. lTig.. 8 is a transverse section on line 3 3 ot ltig., 2. lis a plan oil' a modied torni oi the inventiono 5 is a transverse section on line ol Zl..

rllhe invention is eireinplihed in a conveyer embodying a pair ol horizontally travelling endless belts a and a, oil sullicient length to deliver the loadcarriers to different disftti charge stations. rllhese belts are spaced lapart to leave a longitudinally entending spa-ce a3 between there and they pass around pulleys or rollers a, one oit vvhich is driven in any suitable manner to drive the belts synchro nously. The rollers are carried by a suitable sie 1927. Serial N0. 202,503.

frame composed ofstandards b', cross-bars b3 and longitudinal bars b2, secured together to -orm a rigid supporting structure. The upper reach of each belt travels over a bed b4, to ysuitably support the load carriers c in transit to the discharge-stations. These beds are supported by the standards b. Adjacent the outer margin ol? the belt a, there is provided a continuously extending side Wall b5, and adjacent the outer side of the belt o a side-vvall b9, to v.torni a passage-way for the loadcarriers, which are usually rectangular boxes, on the belts. ln the side-Wall b9 there is formed a gap or opening be tor each stan tion at vvhich bones are to be discharged, and through Which the bones may pass out of the passageway. 'lhe bones c are `ol sucient vvidth to rest on both oi the belts andv to eirtend across the longitudinal gap between them, so the central portions ont their bottoms vvill be eirposed. ,l roller t7 is disposed across each gap h adjacent the outer edge oil y belt o vvith its anis substantially parallel to said edge to lacilitate the lateral discharge or the bones trom the conveyer.

For the purpose oil lacilitating the lateral displacement oi the bones c 'trom the belts and raising them during the discharging operation, there is provided at each discharge station, a pair olf rollers d', el spaced apart and coairially disposed in a 'lorlred brachet d2., 'llhis bracket d2 is pivoted or svvivelled to rotate horizontally, so the airis ol these rollers vvill entendv obliquely across 'the conu veyer to direct the bones c angularly and transversely to the gap 6G. "llhe tops oit the rollers d and d entend slightly above the plane ot the top tace oil the conveyer belts, so that as they are encountered by the boa, the latters iront portion will be litted od the belt.. Bracket d2 is mounted to rotate horizontally on a plate da which is lined to a bar d4 vvhich is supported by `trarne-bars b3. llt desired anti-friction ballad5 may be inter posed between the braclret a2 and plate b3..

lEach bon c is provided on one of its sides vvith a bar ct, the iront end o'l Which is inn clined, as at c, and travels in the path ot a roller c6, vvhich is mounted in a braclret c7 lined to the side vvall b5 to torce the boa'. c

titi? lill - Figs. 1 to 3, a device, controlled by the boxes,

is provided to automatically swing the rollers d, df horizontally to' guide the boxes obliquely and laterally from the conveyer belts,

= so that the frontends of the boxes will, be-

sides. bein lifted oli" the conveyer-belts, be guided obiquely, to facilitate the discharge of the boxes. This device comprises a bar or rail c, secured to one side of the box-0 with an inclined front edge e, a roller e,

e, and a longitudinallyextending arm e" which the boxes are clear the rollers c and e,

. to be discharged at the respective stationsf .eI and having its upperl'end normally disposed in, the longitudinal path of the bar c and journalled in the forked end of a stem e which is transversely slidable in a bracket e2 fixed to al frame-standard b a lever e, fulcrumed at e5 on the bracket p-ivotally connected to the outer end ofthe stem e', a link e, pivoted to the lower end of the lever rigid with the bracket d2 in which the 'rollers d, d are journalled, and to which the link e is pivoted,l as at e?. A stop e? limits the inward movement of stem e and roller e so that the latter'will be normally positioned in the path of bar ou. A spring 61 is applied to retract the rollers d, d andtheir shifting device into their normal position so 'the rollers will rotate in the direction of travel of the boxes and belts when the boxes, which are not to be discharged, are passing over the rollers.

In practice the convey'er systems are usually adapted to selectively discharge the boxes at different stations along the belt. For this purpose, the bars o* and c, with provided, are disposed at ldifferent heights on the boxes, as indicated by dotted lines in Fig. 3, so they will except at the particular 'station at which the boxes are to be discharged. At each station the rollers o ande are correspondingly positionedto coact with bars c* and 0,11 respectively of the series 1 The operation will be as follows: Assuming w the-'.belts'a and a to be constantly driven,

boxes '-c placed thereon will move longitudinally lwith the belts. As the box approaches a gap b", atwhich it is to be discharged, its

will engage roller e and shift it laterall and `outwardly so that stem e', lever 5 e, link e', and arm eT, will be shifted .any desired number of swing the lifting rollers d d horizontally. so their axes Will extend obfiquely across the table before the front end of the box encounter rollers d, d. When the front end of the box engages the rollers d, d', it will be raised ofi' the belts so`that only its rear edge will rest on the belts. As the inclined `end c5 of the bar c* encounters the rollers o,

verse deflection of the box. After the box in its forward movement has been deflected by the roller c", the lug cs ly of the track 01 so that in its continued forward movement, the box will be further` deflected while itis supported on the liftmg rollers andthe belt until the rear end of th/box has passed off the latter rollers. At such time, the box will have been deflected transversely suiiiciently sothat it will bear on the roller b7 andfallout of the conveyer, or, if not the rear end will becarried forwardly by the belt a. until the box is positioned so ltwill roll over the uide roller b' and out of the conveyer. The oxes whichare not provided with bars o* and o for selective operation by and of the rollers c and e respectively, will move forward in a straight line with the belts and pass over the lifting rollers d, d which are then positionedto rotate in the direction of travel of the belts.

In the form of the invention illustrated in Figs. 4. and 5, the lifting rollersd20 d for the carrier are mounted in a bracket 2 which is connected to swing horizontally on an offcenter pivot al2s on the stationary bearing plate ai". This off-center pivot permits the rollers carried by the bracket e. to swing freel in a horizontal lane responsively to angu ar movement of t e box c, initiall by the roller c? and continued b the trac 01 as it is engaged by lug c. is deflection occurs before the front of the carrier reaches the castering rollers d d", so that the box itself will swing the rollers horizontally and obliquely to facilitate the oblique lateral movement of the box and lift it oil' the belt during the discharging operation, and until a sufficient portion of the box has been deflected to cause it to pass through the discharge by gravity onto any suitable guide w ic may be provided to receive it.

All forms of the invention are usable with 'a selective switching system, such asis exemplified by Patent No. 1,504,705, -in which aps and discharge stations are provided, and in which the boxes and the roller-shifting means are arranged for selective operation by mere change in the elevation of t e devices on the carrier and -will pass outwardcarriers, so as to travel on the belts,

ao a pair ot endless belts spaced apart,

rier o the belt while the carrier yis bein p versel carrier,

Ahori'zontallyaland positione their coacting elements, as exemplified irl said patent. y

The invention exempliesan endless conveyer s stem Vwith means which will automatical y lift all but one end of the box out of contact with the upper face of the conveyer belts during the lateral displacement of the to overcome the tearing and cutting which results from the presence of sharp articles or materials on the box or between `it and the belts. The swin 'ng of the lifting rollers is controlled by the loxes travelling with the belts. The discharging means is simple in construction.

The invention is not to be understood as restricted to the details set forth, since these may be modified within the scope of the a pended claims, without departmg from t e spirit and scope of the invention.

Having thusl described the invention, what I claim as new and desire to secure by Letters Y Patent,'is: s 1. A conveyer comprising in combination a pair of endless belts spaced apart, a carrier and means between the belts, ositioned to raise'a portion of the carrier o the belt while the'carrier is being .dis-

charged transversely from the belts. 2. A conveyer `comprising in combination to travel on the belts, and a roller between the belts, positioned to raise a portion of the carrier o the belt while the carrier is being discharged transversely from the belts.

3. A conveyer comprising in combination a pair of endless belts spaced apart, a carrier to travel on the belts, and means between the belts, ositioned to raise a portion of the rar- 1scharged transversely from lthe belts, and orif `zontally rotatable to guide the carrier trans- 4. conveyer. comprising in combination a pair of endless belts spaced apart, a carrier to travel on the belts, and a vroller between the belts, positioned to raise a portion of the carrier while the carrier is bein discharged transversely from the belts, and orizontall rotatable to guide the carrier obliquely o the belts.

5. A conve er comprising in combination a pair of en less belts s aced a art, a load carrier to travel on the-be ts, and orizontally rotatable means between the belts to `lift a while the carrier is'being dischar ,d transversely,

said means being contro ed by the to guide the carrier obliquely from the belts.

6. In combination, a pair of endless belts spaced apart,va load carrier to travel thereon, means betweenthe belts,. ivoted to swing rier oft the andmeans controlled by the carrier for said means.

a carrier P vrier laterally 7. In combination, a pair of endless belts spaced apart, a carrier to travel thereon, a roller between the belts, pivoted to swing horizontally, and positioned to raise the carrier oft the belt, and means controlled by the carrier for swinging said means.

.8. In combination, a pair of endless beltsv spaced apart, a carrier to travel thereon, means between the belts, positioned to raise a rtion of the carrier oil the belt, means'for shiftin the carrier transversely, and means contro-ed by the carrier for swinging the means to guide the lifted carrier transversely. 9. In combination, a air of endless belts spaced apart, a load c'arrler to travel thereon,

a horizontal turnable roller between the Vbelts positioned to naise'a portion of the carrier o the belt, means controlled by the carrierV for swinging said means, and .means for shifting the earner transversely.

10. In combination, a spaced apart, a load carrler to travel thereon, horizontally turnable means betweenk the belts, posit1oned to raise the carrier oi the belt, means controlled b the carrier for Swingin said means, anv means to delect the carrier transversely after saidmeans has been shifted.

11. Ina conveyer, air of endless belts spaced a art, load-cab riers to travel on the belt, devlces to lift the?v carriers, pivoted to swinghorizontally, dischargin `stations laterally adjacent the path of trave of the carriers, means controlled by the :carriers for swinging the devices angularly to the path of travel to deiiect the caroi the belts, vices for deliecting at the stations.

Si ed at Chicago, Illinois, of ay, 1927.

air of endless belts the combination bf a' and selective de-v ositioned portion. of the carrier o the belt 

